[all-commits] [llvm/llvm-project] 99d485: [llvm][AArch64] Preserve regmask when expanding th...

[David Spickett via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 99d485917ae5f10629cb9d7ca96b7cd6773ac35f
      https://github.com/llvm/llvm-project/commit/99d485917ae5f10629cb9d7ca96b7cd6773ac35f
  Author: David Spickett <david.spickett at linaro.org>
  Date:   2023-11-30 (Thu, 30 Nov 2023)

  Changed paths:
    M llvm/lib/Target/AArch64/AArch64ExpandPseudoInsts.cpp
    A llvm/test/CodeGen/AArch64/blr-bti-preserves-regmask.mir
    M llvm/test/CodeGen/AArch64/kcfi-bti.ll

  Log Message:
  -----------
  [llvm][AArch64] Preserve regmask when expanding the BLR_BTI pseudo instruction (#73927)

Fixes #73787

Not doing so lead to us making use of a register after the call, which
has been clobbered by the call.

Added an MIR test that runs only the pseudo expansion pass.